填入所缺的词，完成下列对话

Woman: (1)__________ I (2)__________ you?

A: Yes, er, what would you (3)__________?

B: I (4)__________ know.

A: Well, (5)__________ you like something (6)__________ drink? What (7)__________ a

    glass of milk?

B: No, thanks. I think (8)__________ like a bottle of orange. (9)__________ about you?

A: I'd like a cup (10)__________ tea. What about (11)__________ to eat?

B: (12)__________ cakes, please.

A: We'd like a cup of tea, a bottle of (13)__________ and some cakes. please.

Woman: OK… Here (14)__________ (15)__________.

( )是政府或社会机构必须始终认真履行的最起码的社会保障职责。

A．社会保险

B．社会救济

C．社会福利

D．社会优抚